Corrected entry: Just before Lord Vader appears the first time (on the boarded consular ship, through the breached door), there is a Stormtrooper checking another trooper apparently dead on the floor (he's lifting the dead one's head). Then Vader enters, and the Stormtrooper quickly straightens up, dropping the head. It turns out the "dead" Stormtrooper was actually alive, however, because he carefully lowers his own head to the floor. (00:04:30)
Corrected entry: When the rebels are preparing to attack the Death Star, Luke is told that the exhaust port he must hit is only two meters wide. Meters? Isn't it a little odd that the world of "A long time ago in a galaxy far, far away" uses "our" metric system? Especially considering that its units were (originally) based on the circumference of the Earth?
Corrected entry: In the scene where the rebels are in the briefing room for the attack on the Death Star, the guy explaining the attack says that they will need Proton Torpedos because the exhaust port is ray shielded. When Luke finally gets the torpedos in, there are not any ray shields. (01:40:35 - 01:57:00)
Corrected entry: Considering how expensive the Death Star was you would think that they would be able to afford decent chairs, during the first scene at the big table the back of Tarkin's chair wobbles like hell, especially when he first walks in and sits down. (00:36:00)
Corrected entry: Special Edition mistake. For the SE release George Lucas added a deleted scene with Jaba the Hut and some bounty hunters looking for Han Solo and Chewbacca at the Millennium Falcon. Since Boba Fet had become such a popular character, he added him in too. The problem is the in the Star Wars Holiday Special (which aired November of 1978) Chewbacca meets Boba Fet for the first time with Luke Skywalker. Now it is true that George Lucas said that if he had the time and a sledge hammer he would smash ever copy of the Holiday Special, BUT it is still a part of the Star Wars Universe, and therefore still canonical.
Corrected entry: When the Garindan, aka "Long Snout," directs the Stormtroopers toward the launch bay for the Millennium Falcon, he whacks himself in the nose as he points. Not only does this reveal the bogus rubbery nose, but it's also likely that a creature that spent his entire life with that nose would have learned by now not to hit himself there.